"""
Stripe 支付渠道实现
为后续扩展准备
"""

from .base import PaymentChannelBase
from typing import Dict, Any
import frappe


class StripeChannel(PaymentChannelBase):
    """Stripe 支付渠道"""
    
    def __init__(self, config: Dict[str, Any]):
        super().__init__(config)
        # 这里后续可以集成 Stripe SDK
        # import stripe
        # stripe.api_key = config.get('secret_key')
    
    def get_required_config_fields(self) -> list:
        return ['publishable_key', 'secret_key', 'webhook_secret']
    
    def get_display_name(self) -> str:
        return "Stripe 支付"
    
    def get_supported_currencies(self) -> list:
        return ['USD', 'EUR', 'GBP', 'CAD', 'AUD', 'JPY', 'CNY']
    
    def get_supported_payment_methods(self) -> list:
        return ['card', 'alipay', 'wechat_pay', 'apple_pay', 'google_pay']
    
    def create_buyer(self, email: str, display_name: str, country: str, **kwargs) -> Dict[str, Any]:
        """创建Stripe客户"""
        try:
            if not self.validate_config():
                raise Exception("Stripe 配置不完整")
            
            # TODO: 实现 Stripe 客户创建
            # customer = stripe.Customer.create(
            #     email=email,
            #     name=display_name,
            #     metadata={'country': country}
            # )
            
            # 暂时返回模拟数据
            customer_id = f"cus_{frappe.generate_hash(email)}"
            
            frappe.logger().info(f"[Stripe] 成功创建客户: {customer_id}")
            return {
                "success": True,
                "buyer_id": customer_id,
                "data": {"id": customer_id}
            }
            
        except Exception as e:
            frappe.logger().error(f"[Stripe] 创建客户失败: {str(e)}")
            return {
                "success": False,
                "error": str(e)
            }
    
    def create_checkout(self, buyer_id: str, amount: float, currency: str, **kwargs) -> Dict[str, Any]:
        """创建Stripe结账会话"""
        try:
            # TODO: 实现 Stripe 结账会话创建
            # session = stripe.checkout.Session.create(
            #     customer=buyer_id,
            #     payment_method_types=['card'],
            #     line_items=[{
            #         'price_data': {
            #             'currency': currency,
            #             'product_data': {'name': 'Payment'},
            #             'unit_amount': int(amount * 100),
            #         },
            #         'quantity': 1,
            #     }],
            #     mode='payment',
            #     success_url='https://your-site.com/success',
            #     cancel_url='https://your-site.com/cancel',
            # )
            
            # 暂时返回模拟数据
            session_id = f"cs_{frappe.generate_hash(str(amount))}"
            
            frappe.logger().info(f"[Stripe] 成功创建结账会话: {session_id}")
            return {
                "success": True,
                "checkout_id": session_id,
                "data": {"id": session_id}
            }
            
        except Exception as e:
            frappe.logger().error(f"[Stripe] 创建结账会话失败: {str(e)}")
            return {
                "success": False,
                "error": str(e)
            }
    
    def create_payment_intent(self, checkout_id: str, **kwargs) -> Dict[str, Any]:
        """创建Stripe支付意图"""
        try:
            # TODO: 实现 Stripe 支付意图创建
            # intent = stripe.PaymentIntent.create(
            #     amount=amount,
            #     currency=currency,
            #     customer=customer_id,
            # )
            
            # 暂时返回模拟数据
            payment_token = f"pi_{frappe.generate_hash(checkout_id)}"
            payment_url = f"https://checkout.stripe.com/pay/{payment_token}"
            
            frappe.logger().info(f"[Stripe] 成功创建支付意图: {payment_token}")
            return {
                "success": True,
                "payment_token": payment_token,
                "payment_url": payment_url,
                "data": {"id": payment_token}
            }
            
        except Exception as e:
            frappe.logger().error(f"[Stripe] 创建支付意图失败: {str(e)}")
            return {
                "success": False,
                "error": str(e)
            }
    
    def get_payment_status(self, checkout_id: str) -> Dict[str, Any]:
        """获取Stripe支付状态"""
        try:
            # TODO: 实现 Stripe 支付状态查询
            # session = stripe.checkout.Session.retrieve(checkout_id)
            # payment_intent = stripe.PaymentIntent.retrieve(session.payment_intent)
            
            # 暂时返回模拟数据
            status = "pending"
            
            return {
                "success": True,
                "status": status,
                "data": {"status": status}
            }
            
        except Exception as e:
            frappe.logger().error(f"[Stripe] 获取支付状态失败: {str(e)}")
            return {
                "success": False,
                "error": str(e)
            }
    
    def handle_webhook(self, payload: Dict[str, Any]) -> Dict[str, Any]:
        """处理Stripe Webhook"""
        try:
            event_type = payload.get('type')
            
            frappe.logger().info(f"[Stripe Webhook] 收到事件: {event_type}")
            
            # TODO: 根据事件类型处理
            if event_type == 'checkout.session.completed':
                return self._handle_payment_success(payload)
            elif event_type == 'payment_intent.payment_failed':
                return self._handle_payment_failed(payload)
            else:
                return {"success": True, "message": "事件已接收但未处理"}
                
        except Exception as e:
            frappe.logger().error(f"[Stripe Webhook] 处理失败: {str(e)}")
            return {"success": False, "error": str(e)}
    
    def _handle_payment_success(self, payload: Dict[str, Any]) -> Dict[str, Any]:
        """处理支付成功"""
        frappe.logger().info(f"[Stripe] 支付成功: {payload.get('data', {}).get('object', {}).get('id')}")
        return {"success": True, "message": "支付成功处理完成"}
    
    def _handle_payment_failed(self, payload: Dict[str, Any]) -> Dict[str, Any]:
        """处理支付失败"""
        frappe.logger().warning(f"[Stripe] 支付失败: {payload.get('data', {}).get('object', {}).get('id')}")
        return {"success": True, "message": "支付失败处理完成"}
